Vintage Pixels a large database of historical, high quality, free-for-use images which allows people to share their archived photos
Compfight If you click on: Tags you will have the option of searching through all the tags or all text; Creative Commons is a link to go between all, off or commercial searches; Seek Original allows you to choose whether or not you want original images.
Here are links to free-use images:
Wikimedia Commons
The Open Photo Project
AnimHut 180+ free to use image websites
Flickr click on selected image, scroll down and select 'creative commons'
Flickr Creative Commons
Flickr-Storm
Wikipedia Public domain images
GovWatch copyright-free images under categories such as Dept. of Defence; Antarctica, NASA, etc.
Old Book Illustrations under categories such as animals, landscape, scenes, buildings/monuments, science/technology, etc.
Unprofound.com You can search image according to colour; free to use in any personal or commercial project (check)
Open photo a wiki-based photography site; browse or search by tags
Image After free images and textures under categories such as elements; fabrics; wood; fur; goo; nature; rock; roof, etc.
Blogging Sueblimely Sue Bride's blog with many links to free image sites
Vintage Pixels a large database of historical, high quality, free-for-use images which allows people to share their archived photos
Compfight If you click on: Tags you will have the option of searching through all the tags or all text; Creative Commons is a link to go between all, off or commercial searches; Seek Original allows you to choose whether or not you want original images.